Engraving-machine.



. Patented Mar. 20, I900. S. EATON.

ENGRAVING MACHINE.

(Application filed Dec. 21, 1599.

2 SheefsSheet (Net Model.)

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v Patented Mar. 20, I900.

w. s. EATON.

ENGRAVING MACHINE.

(Application filed Dec. 21, 1899.)

2 Sheets-Sheet 2.

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' weighted arm f, which will thus follow all the UNITED STATES PATENTQFFEQE.

WILLIAM s. EATON, F sAe HARBOR, NEW YORK, AS$IGNOB To run EATON itGLOVER COMPANY, or NEW YORK, N. Y;

ENGRAvlNG -MAl-llNE'.

SPECIFICATION forming part of Letters Paste No. 645,795, dated March 20,1966. Application filed December 21, 1899. Serial No. 741,119. orbinodei.)

T0 at whom it may concern.-

Be it known that 1, WILLIAM S. EATON, a citizen of the United States,and a resident of SagHarbor, Suffolk county, State of New York, haveinvented new and useful Improvements in Engraving-Machines, of which thefollowing is a specification.

This invention relates to a machine of the class designed for engravingseals orother articles in which the design shown upon the pattern-plateis to be reproduced in a reversed position.

It consists in the various features of con struction pointed out in theclaim.

, In the accompanying drawings, Figure 1 is a front elevation of myimproved engravingmachine; Fig. 2, a side elevation thereof; Fig. 3,anenlarged plan of the seal-holding chuck Fig. 4, a section on line 4 4,Fig. 3'; Fig. 5, a sectional detail of the tool-holder; Fig. 6, a planof the pattern-plate, and Fig. 7 a plan of the seal engraved by themachine.

The letter a represents the frame of the machine, upon thebase-plate aof which the pattern-plate b to be reproduced is secured by means of aclamp a in such a manner that its face points upward. The downwardlypointing tracer c, that follows the lines of the pattern b, is securedto the free end of a lever.

d, pivoted at d to a lever d which is at d pivoted to yoke d This yokeis pivoted at d to frame a, so that in this Way the lever 01 turns on auniversal joint. The lever d is engaged by a vertically-adjustable slidee, which may be clamped to the lever by nut e; To the slide 2 is pivotedat f a countermovements of the tracer c. The free end of the armfisforked, as at f Fig. 3, and withi of a notched movable jaw j, which maybe drawn together by clamp-screws and between which the blank It isheld.

To the frame a is secured, beneath the chuck jj, a vertically-adjustablebed-plate Z, supporting a slide-rest Z, having a socket Z Within thissocket is free to turn a pin m, depending from tool-holder m, placed inprox imity to the chuck and revoluble upon the slide-rest, to which itmay be locked in any position desired by a set-screw Z Theupwardly-pointing engraving-tool a is held by a perforated block. 0,which is revolulo'ly attached to holder m by screw 0. In this way thetool may be set at different inclinations with relation to theseal-blank, so as to vary the width of the lines engraved.

In order to hold the seal-blank off the tool whenever desired, thebase-plate t is provided with an upright 19', having a pivoted rest 15,adapted to engage arm f. A chain q, secured to arm f by a rod q" andadapted to be pulled down by the operator, serves to press the sealblankwith a greater or less force upon the tool after the rest 9 has beentilted and the blank has dropped into contact with the tool.

It will be seen that in the machine above described the tracer and theengraving-tool point in opposite directionsviz., both outwardly and thatthe faces of the patternplate and seal-blank also point in oppositedirections-win, both inwardly. If the tracer is moved along the lines ofthe pattern, its motion will be transmitted through the train of leversand universal joints, but to a diminished degree, to the seal-blank, andthe latter will be drawn over the engraving-tool. Thus the tool willengrave the design of the pattern-plate b, Fig. 6, on a reduced scale,upon the seal, Fig. 7 but the design upon the latter will be reversed,as it should be. In this way seals and other articles which are to beused as stamps, 860., may be readily provided with reduced and reversedengravings without first reversing the design on the pattern-plate, andthus the cost of their production is greatly diminished.

What I claim is In an engraving-machine,the combination of a tracer witha freely-swinging lever actuated thereby,af0rked arm adjustably clampedcured to the base-plate, and having a pivoted to said lever, a lever g,hung within said arm, rest which is adapted to engage the forked achuck, means for removably attaching the arm, substantially asspecified.

chuck to said lever g, a Vertically-adjustable WILLIAM S. EATON.base-plate, a slide-rest supported thereon, an Witnesses:

engraving-tool, means for adjustably seeur- WILLIAM SCHULZ,

ing said tool to the slide-rest, an upright se- F. V. BRIESEN.

